/* =========================================
   GENEL DEĞİŞKENLER VE SAYFA YAPISI (Ortak)
   ========================================= */
:root {
    --bg-body: #cfd0d5; 
    --bg-card: #dfdfe4; 
    --border-color: #aeb0b5; 
    --border-light: #c7c7cc; 
    --text-main: #1c1c1e;
    --text-muted: #6c6c70;
    --accent: #4a4a4d;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-body);
    margin: 0;
    padding: 0;
    color: var(--text-main);
    /* DİKKAT: display: flex ve height: 100vh buradan kaldırıldı. 
       Çünkü akış sayfasını bozuyordu. Giriş sayfası için .auth-container kullanacağız. */
}

/* =========================================
   GİRİŞ / KAYIT SAYFASI STİLLERİ (Auth)
   ========================================= */
/* Giriş kartını sayfanın ortasında tutmak için yeni kapsayıcı */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.auth-card {
    background-color: var(--bg-card);
    padding: 35px 30px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    width: 280px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
}

.auth-card h2 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 30px;
    font-size: 26px;
    font-weight: 700;
    color: var(--text-main);
}

.input-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 18px;
    text-align: left;
}

.input-group label {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-main);
    margin-left: 2px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    padding: 12px 10px;
    border: 1px solid #9c9da2;
    border-radius: 6px;
    background-color: transparent;
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
    color: #000;
}

.input-wrapper input::placeholder {
    color: #8e8e93;
}

.toggle-password {
    position: absolute;
    right: 12px;
    cursor: pointer;
    color: var(--text-muted);
}

.auth-card button[type="submit"] {
    width: 100%;
    padding: 12px;
    margin-top: 15px;
    background-color: transparent;
    border: 1px solid var(--accent);
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    transition: background-color 0.2s;
}

.auth-card button[type="submit"]:hover {
    background-color: #d1d1d6;
}

.switch-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-main);
}

/* =========================================
   ÜST MENÜ (NAVBAR) - Akış Sayfası
   ========================================= */
.navbar {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links button {
    background-color: transparent;
    border: 1px solid var(--accent);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    transition: background-color 0.2s;
}

.nav-links button:hover {
    background-color: #d1d1d6;
}

/* =========================================
   ANA DÜZEN (GRID LAYOUT) - Akış Sayfası
   ========================================= */
.main-layout {
    display: grid;
    grid-template-columns: 240px minmax(500px, 800px) 240px;
    gap: 20px;
    justify-content: center;
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
    align-items: start;
}

/* =========================================
   KARTLAR VE YAN MENÜLER (SIDEBAR)
   ========================================= */
.menu-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sidebar-btn {
    width: 100%;
    background-color: transparent;
    border: 1px solid var(--accent);
    padding: 10px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    transition: background-color 0.2s;
}

.sidebar-btn:hover {
    background-color: #d1d1d6;
}

.info-msg {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.4;
    text-align: center;
}

/* =========================================
   ORTA AKIŞ (FEED CONTAINER)
   ========================================= */
.feed-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
}

.share-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 15px;
    border-bottom: 1px solid var(--border-light);
}

.plus-icon {
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
}

.feed-content {
    display: flex;
    flex-direction: column;
}

.section-title {
    padding: 20px 20px 15px 20px;
    margin: 0;
    font-size: 18px;
    font-weight: 800;
    border-bottom: 1px solid var(--border-light);
}

/* =========================================
   GÖNDERİLER (POSTS)
   ========================================= */
.post-item {
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
}

.post-item:last-child {
    border-bottom: none;
}

.post-user {
    font-weight: 800;
    font-size: 14px;
    margin-bottom: 6px;
}

.post-text {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 10px;
}

.post-footer {
    font-size: 12px;
    color: var(--text-muted);
}

/* =========================================
   RESPONSIVE (MOBİL UYUMLULUK)
   ========================================= */
@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 200px 1fr 200px;
    }
}

@media (max-width: 768px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    .sidebar {
        display: none; 
    }
}